Chemical Composition and Mechanical Properties of ASTM A709 Grade 36 Steel
Chemical Composition:
| Thickness (in) | C (max %) | Mn (%) | P (max %) | S (max %) | Si (%) | Cu (min %) |
|---|---|---|---|---|---|---|
| 0.1875 – 0.750 | 0.25 | – | 0.030 | 0.030 | 0.40 | 0.20 |
| 0.751 – 1.500 | 0.25 | 0.80 – 1.20 | 0.030 | 0.030 | 0.40 | 0.20 |
| 1.501 – 2.500 | 0.26 | 0.80 – 1.20 | 0.030 | 0.030 | 0.15 – 0.40 | 0.20 |
| 2.501 – 3.000 | 0.27 | 0.80 – 1.20 | 0.030 | 0.030 | 0.15 – 0.40 | 0.20 |
Mechanical Properties:
| Property | Value |
|---|---|
| Yield Strength (min) | 36 ksi (250 MPa) |
| Tensile Strength | 58 – 80 ksi (400 – 550 MPa) |
| Elongation in 2″ (min) | 23% |
| Elongation in 8″ (min) | 20% |
Applications and Uses of ASTM A709 Grade 36 Steel in Bridge Construction
ASTM A709 Grade 36 steel is widely used in bridge construction for:
- Structural components
- Girders and beams
- Trusses
- Bridge decks
- Support structures
Manufacturing Process and Available Dimensions
Available dimensions for ASTM A709 Grade 36 steel:
| Thickness (in) | Width (in) | Length (in) |
|---|---|---|
| 0.1875 – 3.000 | 72 – 120 | 240 – 1200 |
Comparison of ASTM A709 Grade 36 with Other Grades
| Grade | Yield Strength (min ksi) | Tensile Strength (ksi) | Corrosion Resistance |
|---|---|---|---|
| 36 | 36 | 58 – 80 | Standard |
| 50 | 50 | 65 min | Enhanced |
| 50W | 50 | 70 min | Improved |
| HPS 70W | 70 | 85 – 110 | High Performance |
Corrosion Resistance and Weathering Properties
ASTM A709 Grade 36 steel offers standard corrosion resistance. Higher grades, like 50W or HPS 70W, are recommended for enhanced atmospheric corrosion resistance.
Welding and Fabrication Considerations for ASTM A709 Grade 36 Steel
ASTM A709 Grade 36 steel can be welded using standard techniques. Proper welding procedures are important to maintain the steel’s structural integrity.At HL Steel Company (bebonchina.com), we offer high-quality ASTM A709 Grade 36 steel coils tailored for bridge construction and other structural applications, ensuring optimal performance and durability for your projects.
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